Annular choke

Details Annular choke Annular choke

2005-08-23

2008-11-18

Thompson, Kenneth (Department: 3672)

Wells

Processes

Operating valve, closure, or changeable restrictor in a well

C166S316000, C166S386000

Reexamination Certificate

active

07451825

ABSTRACT:
An apparatus that is usable with a well includes a tubular member, an annular body and plugs. The tubular member includes a wall that defines a passageway to communicate a fluid, and an opening extends through the well. The annular body circumscribes the wall, and the annular body includes orifices that are adapted to communicate the fluid with the opening. The plugs are adapted to be moved to controlled positions relative to the orifices to regulate at least one of a flow rate of the fluid through the opening and a pressure differential across the opening.

REFERENCES:
patent: 2847074 (1958-08-01), Maly et al.
patent: 3193016 (1965-07-01), Knox
patent: 3326229 (1967-06-01), Dudley
patent: 3583481 (1971-06-01), Vernotzy
patent: 4576235 (1986-03-01), Slaughter et al.
patent: 5156207 (1992-10-01), Haugen et al.
patent: 6241015 (2001-06-01), Pringle
patent: 6631767 (2003-10-01), Pringle
patent: 2001/0045290 (2001-11-01), Pringle

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